452 RYDBERG: PHYTOGEOGRAPHICAL NOTES 
Common to Southern and Northern Rockies 
Poa alpina Ranunculus Eschscholtzti 
Carex bella Saxifraga cernua 
‘*  calciolepis - a debilis 
““ atrata Chrysosplenium tetrandum 
Scirpus pauciflorus Micranthes arnoglossa 
Juncus triglumis Muscaria delicatula 
Juncoides spicatum Androsace subumbellata 
Alsine baicalensis “  filiformis 
“ laeta ‘Condrophylla americana 
Alstnopsis propinqua Pleurogyne fontana 
Sagina saginodes Veronica Wormskjoldii 
Ranunculus alpeophilus 
Restricted to the Southern Rockies 
Alsine polygonoides Condrophylla Fremontii 
Restricted to the Northern Rockies 
tJuncoides arcticum Hemiera ranunculifolia 
hyperboreum Epilobium saximontanum 
. arcuatum : anagallidifolium 
Netocrene parvifolia = clavatum 
Micranthes Lyallii Romanzoffia sitchensis 
= Brunnonianum a Letber git 
5. LAKES, PONDS AND BROOKS 
The purely aquatic flora is not well represented in the Subalpine 
Zone. It contains practically the same species as are in the Alpine 
Zone with few additions from the Montane Zone.* The following 
species belong to this formation: 
Common to the Southern and Northern Rockies 
Sparganum minimum Utricularia vulgaris 
; angustifolium . Sg minor 
Potamogeton alpinus _ Nymphaea polysepala 
Catabrosa aquatica .Hippuris vulgaris 
Carex aquatilis ma _ Lemna gibba 
Veronica americana ‘“* ‘minor 
* Compare discussion in Bull. Torrey Club 41: 473, 
474; 43: 630. . 
